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1. Test mode and specimen
1.1 Block-on-ring test (ASTM G 77, D 2714)
- Ring specimen : ¥õ34.99¡¾0.025mm, t 8.74mm
- Block specimen : t 6.35¡¾0.000-0.025mm, size 15.75¡¿10.16mm
1.2 Two roller test
- Roller specimen : ¥õ152mm
- Slip rates : continuous
- Spin adapter : ¥õ120mm roller insert
2. System components and specifications
2.1 Loading unit
- Precision control system for 100¢¦9000 N load
- Loading fluctuation limit : ¡¾1% for static and dynamic
- Load cell built-in for automatic pressure control
2.2 Test specimen built-in unit
- Test specimen holders for all type of fixed and moving specimens
- Convenient loading and unloading system
- Rigid supporting system for unbalance high load
- Lubricant reservoir with heater : ambient ¢¦ 250¡É (1¡É step)
- Proper heat insulation and water cooling
- Small diameter ring and attachment for block-on-ring test
- Real time friction force measurement for block-on-ring test
2.3 Load support and Motion translation unit
- High load capacity slide bearing structure
- Proper motion translation for twin motor operation
- Continuous slip rate control
- High speed operation up to 3,000 rpm
- Anti-vibration mechanism
- Use of alignment pin
2.4 Control motor unit
- Twin motor operation system for continuous slip rate
- Motor speed : 0¢¦3,000 rpm (1 rpm step)
- Precise speed control driver : ¡¾1 rpm during 10min loaded test
- Real time speed measurement
- Anti-vibration mechanism
- Uses of alignment pins for motor
2.5 Control unit
- Standing type control box
- Precise controls for applied load, motor speed, temperature
- Power on/off switch
- Test start and emergency stop switches
- Auto-stop functions by timer and revolution counter
- Auto-stop functions by over-load and over-temperature sensing
- Data output ports for friction force, motor speed, temperature
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